前者是表示餐厅，后者表示喧闹的餐厅。

dining n.吃饭，进餐。dinning v. 絮聒不休地说；喧闹。dining room

比如：

1、dining room 英[dan ru:m] 美[dan rum]

n. 饭厅;

[例句]This is our kitchen, sitting and dining room all rolled into one.

这既是我们的厨房，又是客厅和餐厅。

[其他] 复数：dining rooms

2、dinning room

餐厅; 饭厅;

[例句]When my husband was going into the dinning room this morning, he dropped some coins on the floor.

今天早上我丈夫走进饭厅时，把一些硬币掉在地上了。